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Preparation of Fe 2 Ni 2 N and investigation of its magnetic and electromagnetic properties

2012; American Institute of Physics; Volume: 100; Issue: 23 Linguagem: Inglês

10.1063/1.4724100

1520-8842

Jingwei Zhang, Chao Yan, Shijiang Liu, Haoshuai Pan, Chunhong Gong, Laigui Yu, Zhijun Zhang,

Multiferroics and related materials

In this work, Fe2Ni2N powders were prepared by calcinating a nanofiber-like precursor in flowing ammonia. It was found that the nitridation temperature is critical to controlling the phase composition of the target products, and the single-phased Fe2Ni2N with high saturation magnetization is obtained after calcinations of the precursor at 800 °C in flowing ammonia. Dielectric permittivity and magnetic permeability of paraffin composites having 50 and 70 wt. % filler amount were measured within a frequency range of 2.0–18.0 GHz, respectively. Reflection loss maxima of −25.5 dB at 8.0 GHz were achieved for 50 wt. % Fe2Ni2N composite of 3 mm thickness, suggesting that as-prepared Fe2Ni2N could be a promising candidate as microwave absorbing filler, which is to help to practicably broaden the scope of microwave absorbing materials.